Technician A says that there should be no noticeable movement in an up and down motion when pulling or pushing on a connecting rod installed on a piston. Technician B says that special tools must be used to remove piston pins with a press-fit design. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: C
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An ideal gas with CP = (7/2)R and molecular mass of 28 kg/kmol enters a steady state nozzle at T = 500 K and P = 0.5 MPa. The entering stream has a negligible velocity but the exiting stream is travelling 100 meters per second. What is the temperature of the exiting stream?
A. 504. K B. 495. K C. 328. K D. 493. K E. Insufficient information to solve
Which of the following parameters is NOT used by the PLC 5 and SLC 500 timer instructions?
A) Preset value B) Timer number C) Trigger voltage D) Time base
Which of the following statements BEST describes parity checking?
A) Parity checking is not suitable for detecting single-bit errors in transmitted codes. B) Parity checking is capable of detecting and correcting errors in transmitted codes. C) Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another. D) Parity checking is best suited for detecting single-bit errors in transmitted codes.
What are free electrons?
A) Electrons that flow without any energy input B) Electrons that escape from conductors into the surrounding air C) Electrons that are no longer bound to their atoms D) Electricity that the power company does not charge for